/*-------------------------------------------------------------------------
 *
 * parse_expr.h
 *	  处理解析器中的表达式
 *
 * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/parser/parse_expr.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARSE_EXPR_H
#define PARSE_EXPR_H

#include "parser/parse_node.h"

/* GUC 参数 */
extern PGDLLIMPORT bool Transform_null_equals;

extern Node *transformExpr(ParseState *pstate, Node *expr, ParseExprKind exprKind);

extern const char *ParseExprKindName(ParseExprKind exprKind);

#ifdef FDD
typedef  Node *(*fdb_postgis_expr_hook_type)(ParseState *pstate, Node *expr, bool *surport);
extern void FDD_Update_EnableFbaseGis_Conf(void);
extern char*  fdb_get_current_search_path(void);

#endif

#endif							/* PARSE_EXPR_H */
